Hosting quality and price can vary significantly. You need to know what you are getting when you have an agreement.
What to Expect with $10 / Month Hosting:
this is the most likely to have viruses. You will need to have an anti-virus protection and some maintenance when/if this happens
this is the most likely to be hacked. You need to be okay that this might be down for a longer period of time and not be dependent on your site being operational at all times
this is usually downgraded by the search engines, meaning that a website hosted by these companies will most likely not show up at the top of a search
this might only have 1 or 2 email addresses
This can still be good for a church website, but you need to understand what you are most likely exposing yourself to.
What to expect with $30+ / Month Hosting:
this should include your virus protection and would have some additional monitoring to protect your site
this should include regular backups of your content, so that you can retrieve all of your information quickly if the site goes down
this should include some sort of notification if there is a problem with the site
this would be higher ranked by the search engines and improve your rankings
this would include multiple emails
this would include some basic maintenance of the site and plugins to ensure that things are updated
This can still be good for a church, even though it is more expensive.
When you are selecting a hosting company, just know what you are at risk of and some of the questions that you might ask when given a price.
1. Start With How You Use Your Website
do you want to be found?
do you want customized emails?
do you want to upload content to the site?
do you need plugins?
2. What Can You Afford?
Does it make sense to pay the extra? If your website is not a strategic site for you church, maybe you can have the lower cost hosting. If you really don't have a budget, do you need hosting of a website at all? A blog could work for updates and information without having any hosting fees.